BMW fault code 001F
Convertible-top module
In the convertible-top module, code 001F means different things depending on the version of the module in the car. Find your car below; the app shows the right one for yours.
CVM: Switch, cowl locked, short to ground or open circuit
Module version: Convertible-top module (CVM_II)
In: 3 Series (E46) 1998–2006
CVM: Switch, cowl locked, input to ground
Module version: Convertible-top module (CVM_III)
In: Z8 (E52) 2000–2003
CVM: Switch, cowl panel locked, short circuit to ground
Module version: Convertible-top module (CVM_IV)
In: Z4 (E85) 2002–2008
Reading and clearing it
Fault code 001F is a BMW code, stored in the car's convertible-top module, not a generic OBD2 code (P0xxx): a generic OBD2 reader only reaches the engine's emissions faults, so it won't show it. AutoLingo for BMW reads it with BMW's own diagnostic protocols, in plain English, with the details the module stored about it, and clears it after a repair. If a fault comes right back after it's cleared, the problem is still there.
The convertible-top module is on: 3 Series (E46), Z8 (E52), Z4 (E85), Z4 (E86)
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